Diesel, Extra or Ultimate
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874 Posts
Usually Esso diesel.
Have used Shell Extra a few times and noticed no difference. I usually just go to the Esso 'cos I used to work in one
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Filled up the other day with Shell Extra so I might give it a few tankfuls this time to see if I notice any difference.
Have used Shell Extra a few times and noticed no difference. I usually just go to the Esso 'cos I used to work in one![
]Filled up the other day with Shell Extra so I might give it a few tankfuls this time to see if I notice any difference.
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1,481 Posts
I have been using BP Ultimate diesel, but its getting dear now - 92.9p a litre last time I filled up [:O]
Lots of recent posts seem to recommending Shell diesel extra - Is this a performance diesel, like the BP Ultimate?
There's no shell stations that I go by regularly though (its all BP where I go), so will have to find one!
Lots of recent posts seem to recommending Shell diesel extra - Is this a performance diesel, like the BP Ultimate?
There's no shell stations that I go by regularly though (its all BP where I go), so will have to find one!
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1,394 Posts
Shell Diesel Extra whenever I can, but I'm not convinced that it actually makes a difference. Prepared to give it the benefit of the doubt, while there's no price penalty. Never found any BP Ultimate Diesel to try it, but somebody posted good reports, performance wise, on here a while back.
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61 Posts
you want to stick one down there for vegetable oil (biodiesel)!
Provided the cetane number is over 55 you can use anything.
Provided the cetane number is over 55 you can use anything.
i use BP ulitmate plus millers it makes my thing go like f**k!!! i noticed a big difference when i started useing it, Esso made the car really smooth to drive but slow!! and shell made the engine load and rattley but still quick, but BP was a good mix of the 2 quick and smooth!!
I feed mine with either esso (when i'm skint, which is most of the time) or BP Ultimate if i'm doing long trips.
I wouldn't touch shell with a very long barge pole, they might have improved but i still remember when shell screwed up and produced a fuel that burnt the valves out of vw engines back in the 80s.
I wouldn't touch shell with a very long barge pole, they might have improved but i still remember when shell screwed up and produced a fuel that burnt the valves out of vw engines back in the 80s.
Quote: posted by JDP on 01/04/2005 14:49:28
What's the problem with supermarket diesel??
It's a different grade to main garages, it's usually cheaper and there is a quality reason why it is. Usually the ron is lower or/and there aren't as many additives and cleaners in the fuel.
You may well see an Esso or BP tanker filling the super markets, but not out of the same tank (the trailers are compartmentised).
More worryingly super markets usually have a higher level of sediment in there fuels too.
There was a big bit about this on the club gti forum nearly a year ago.
What's the problem with supermarket diesel??
It's a different grade to main garages, it's usually cheaper and there is a quality reason why it is. Usually the ron is lower or/and there aren't as many additives and cleaners in the fuel.
You may well see an Esso or BP tanker filling the super markets, but not out of the same tank (the trailers are compartmentised).
More worryingly super markets usually have a higher level of sediment in there fuels too.
There was a big bit about this on the club gti forum nearly a year ago.
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61 Posts
Quote: posted by vrooooom on 01/04/2005 14:59:22
Quote: posted by JDP on 01/04/2005 14:49:28
What's the problem with supermarket diesel??
It's a different grade to main garages, it's usually cheaper and there is a quality reason why it is. Usually the ron is lower or/and there aren't as many additives and cleaners in the fuel.
You may well see an Esso or BP tanker filling the super markets, but not out of the same tank (the trailers are compartmentised).
More worryingly super markets usually have a higher level of sediment in there fuels too.
There was a big bit about this on the club gti forum nearly a year ago.
As i work in the oil industry (downstream), i thought i would clarify a few things.
First off a word on fuels. In a diesel the main number to be concerned with is Cetane number. This is how easily or difficult it is for a fuel to combust under pressure. Higher cetane number = easier to combust. I believe a cetane number of 55 or more is specified in the vw handbook.
Supermarkets use the same base consituent fuel as the major petrol stations. That means it comes out of the same pipe when it the crude is cracked. The only difference is the amount of detergent and after treatment that is put into the various fuels.
If you are under the impression that a particular fuel gives you better or worse performance at the equivalent cetane (diesel) or petrol (RON) number then this is more likely to be the detergent than anything else.
Quote: posted by JDP on 01/04/2005 14:49:28
What's the problem with supermarket diesel??
It's a different grade to main garages, it's usually cheaper and there is a quality reason why it is. Usually the ron is lower or/and there aren't as many additives and cleaners in the fuel.
You may well see an Esso or BP tanker filling the super markets, but not out of the same tank (the trailers are compartmentised).
More worryingly super markets usually have a higher level of sediment in there fuels too.
There was a big bit about this on the club gti forum nearly a year ago.
As i work in the oil industry (downstream), i thought i would clarify a few things.
First off a word on fuels. In a diesel the main number to be concerned with is Cetane number. This is how easily or difficult it is for a fuel to combust under pressure. Higher cetane number = easier to combust. I believe a cetane number of 55 or more is specified in the vw handbook.
Supermarkets use the same base consituent fuel as the major petrol stations. That means it comes out of the same pipe when it the crude is cracked. The only difference is the amount of detergent and after treatment that is put into the various fuels.
If you are under the impression that a particular fuel gives you better or worse performance at the equivalent cetane (diesel) or petrol (RON) number then this is more likely to be the detergent than anything else.
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